Someone who I would describe as a 'geek' or 'nerd' is a person who loves something to its greatest extent and then looks for other people who love it the same way so they can celebrate loving it together.

It probably wasn't until I was a freshman in high school and I met the people who became my gaming group that I finally found people who were weird like I was: that loved reading and playing games and not just watching a science fiction or fantasy movie but talking all about it.